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The delete() method removes the specified element from a WeakMap object.




Required. The key of the element to remove from the WeakMap object.

Valor de retorno

true if an element in the WeakMap object has been removed successfully. false if the key is not found in the WeakMap or if the key is not an object.


Using the delete method

var wm = new WeakMap();
wm.set(window, "foo");

wm.delete(window); // Returns true. Successfully removed.

wm.has(window);    // Returns false. The window object is no longer in the WeakMap.


Specification Status Comment
ECMAScript 2015 (6th Edition, ECMA-262)
La definición de 'WeakMap.prototype.delete' en esta especificación.
Standard Initial definition.
ECMAScript Latest Draft (ECMA-262)
La definición de 'WeakMap.prototype.delete' en esta especificación.

Compatibilidad de navegadores

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Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support 36 6.0 (6.0) 11 23 7.1
Feature Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support Sin soporte 6.0 (6.0) Sin soporte Sin soporte 8

Notas especificas de Firefox

  • Prior to SpiderMonkey 38 (Firefox 38 / Thunderbird 38 / SeaMonkey 2.35), this method threw a TypeError when the key parameter was not an object. This has been fixed in version 38 and later to return false as per latest ES6 standard (error 1127827).

Ver también

Etiquetas y colaboradores del documento

Colaboradores en esta página: frank-orellana
Última actualización por: frank-orellana,